Document.parentWindow is unsupported Browser Compatibility Check

Description

Document.parentWindow is a Microsoft extension only supported by Internet Explorer and Opera.

Applicable standards

• Android
• BlackBerry
• Chrome
• Firefox
• Opera
• Safari
• iPhone/iPad

Change history

• 6.42 Oct 2021 Removed since there is no Microsoft or W3 documentation or MDN compatibility data for this property.
• 5.27 Oct 2017 Now fires for all non-Microsoft browsers.
• 5.23 Oct 2016 Fixed false positive.
• 5.7 Dec 2014 Fixed false positive.
• 1.0 Feb 2007 Added.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: BugIeParentWindow